1 files changed, 18 insertions, 2 deletions
diff --git a/src/plugins/renderers/opengl/renderer/shaderparameterpack.cpp b/src/plugins/renderers/opengl/renderer/shaderparameterpack.cpp
index 43b0b90c1..bf7d5fce6 100644
--- a/src/plugins/renderers/opengl/renderer/shaderparameterpack.cpp
+++ b/src/plugins/renderers/opengl/renderer/shaderparameterpack.cpp
@@ -100,12 +100,28 @@ void ShaderParameterPack::setImage(const int glslNameId, int uniformArrayIndex,
 // Contains Uniform Block Index and QNodeId of the ShaderData (UBO)
 void ShaderParameterPack::setUniformBuffer(BlockToUBO blockToUBO)
 {
-    m_uniformBuffers.push_back(std::move(blockToUBO));
+    const auto uEnd = m_uniformBuffers.end();
+    auto it = std::find_if(m_uniformBuffers.begin(), uEnd, [&] (const BlockToUBO &block) {
+        return blockToUBO.m_blockIndex == block.m_blockIndex;
+    });
+
+    if (it == uEnd)
+        m_uniformBuffers.push_back(std::move(blockToUBO));
+    else
+        *it = std::move(blockToUBO);
 }
 
 void ShaderParameterPack::setShaderStorageBuffer(BlockToSSBO blockToSSBO)
 {
-    m_shaderStorageBuffers.push_back(std::move(blockToSSBO));
+    const auto uEnd = m_shaderStorageBuffers.end();
+    auto it = std::find_if(m_shaderStorageBuffers.begin(), uEnd, [&] (const BlockToSSBO &block) {
+        return blockToSSBO.m_blockIndex == block.m_blockIndex;
+    });
+
+    if (it == uEnd)
+        m_shaderStorageBuffers.push_back(std::move(blockToSSBO));
+    else
+        *it = std::move(blockToSSBO);
 }
 
 void ShaderParameterPack::setSubmissionUniformIndex(const int uniformIdx)